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Eukaryotic Chromosomes Chromosomes in eukaryotic cells are one, very long DNA molecule associated with proteins The main proteins present are the large, positively charged globular proteins called ...
Prokaryotic Chromosomes The DNA in prokaryotic cells is significantly different from the DNA found in eukaryotic cells Prokaryotes do not contain a nucleus therefore the DNA is located in the cytop...
Genome The total of all the genetic information in an organism is called the genome of the organism This is a complete set of genes present within every cell of an organism This includes all genes ...
Mutation A gene mutation is a change in the sequence of base pairs in a DNA molecule; this may result in a new allele Mutations occur all the time and at random There are certain points in the cell...
Alleles A gene codes for a specific polypeptide that can affect a specific trait or characteristic in an organism Eg. blood type Alternative forms of a gene can exist, these various specific forms ...
Genes & Polypeptides A gene is a section or length of DNA that codes for a polypeptide Genes are heritable factors that influence specific characteristics (via the polypeptides produced) Charac...
Practical 4: Separation of Photosynthetic Pigments Separation of photosynthetic pigments by chromatography Plants contain several different photosynthetic pigments, which absorb different wavelengt...
Absorption & Action Spectrums An absorption spectrum (for a particular pigment) shows how much light of different wavelengths is absorbed by the pigment An action spectrum shows how each wavele...
Effects of Photosynthesis Changes to the Earth’s atmosphere, oceans and rock deposition occur due to photosynthesis The first life forms emerged around 4 billion years ago At the time, there was no...
